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IQH3B 3RU Frame

IQH3B enclosures offer industry-leading, high-density delivery of modular solutions. The 3 RU enclosure accepts up to 16 modules, and has dual redundant PSUs and cooling fans. Analog reference signals can be distributed through the enclosures via two connections that can be independently selected by the installed modules. RollCall control and monitoring is included as standard using the latest generation Gateway (IQRCG) control card that has its own module style rear connector, providing improved (faster) control template access, HTML5 web browser connectivity, dual Ethernet support with DHCP and improved menu caching, with full SNMP control and monitoring functionality.


  • 16 single or 8 double-width modules (or any combination)
  • Plug-in gateway communications card to enable RollCall via RollNet, and RollCall control over TCP/IP Dual 1 GbE connections
  • Fast control access with full menu and control caching for all modules
  • Integrated HTML5-based web browser access for enclosure and module configuration and control
  • SNMP Control and Monitoring of all RollCall enabled IQ modules as standard
  • Dual Ethernet with DHCP support, failover rules and RollCall+ auto-discovery
  • Dual redundant network architecture over Ethernet and RollNet enables mission-critical control applications to function even if a complete network failure occurs
  • 2x analog reference signal distribution for dual standard (bi-level or tri-level), dual video standard (SD or HD), and reference redundancy applications with reference status reporting (Note: Only applicable to modules with -B order codes)
  • Hot-swappable redundant power supplies with PSU status reporting through GPIs on the Gateway control card rear panel
  • Optimum use of rack space — frames do not require any additional ventilation spacing
  • Dual redundant in-service removable fan unit
  • Variable fan speed, dependent upon load and ambient temperature
  • Full chassis monitoring, including inlet and outlet temperature, fan condition and module status
  • Door status monitoring (open/close)
  • Full CE and UL compliance


Inputs, Outputs and Controls

RollCall remote control:

  • BNC connector

RollCall/SNMP over TCP/IP
10/100/1000baseT dual Ethernet Controls via RollCall Remote Control System
Full control via HTML5 interface (available from chassis), any hardware RollCall control surface or standard RollCall Control Panel PC Application and GV Orbit

General Specifications

Module complement: 8 double width or 16 single width (or combinations of both) fitted vertically

Module card dimensions:
100 mm wide, 340 mm long (3.9 in. wide, 13.4 in. long)

Module rear panel dimensions:

  • Height: 129 mm (5.0 in)
  • Double width: 40.4 mm (1.6 in.)
  • Single width: 20 mm (0.8 in.)

Input voltage range: 100-240 V 50/60 Hz

Input connector: IEC320 Fused 4 A(T)

Standby switch: Behind drop-down front panel

Power consumption: 300 VA maximum

Modules power dissipation: 210W/165 LU maximum (100 LU for IQH3BQ)

Output: +7.5V and -7.5V ±5%

Note that all modules have built-in power supply fuses.

CE Performance Information
Environment: Commercial and light industrial E2 immunity, controlled EMC E4 emissions
Peak mains inrush current following a 5 second mains interruption: 10A

Analog reference:

  • 2x analog reference inputs
  • Black (HD tri-level and SD bi-level) and black burst (SD bi-level)
  • SD bi-level – RS-170A
  • HD Tri-level – SMPTE ST 240, SMPTE ST 274 and SMPTE ST 296

Connector/Format: BNC/75Ω panel jack on standard IQ connector panel

Analog reference return loss:

  • SD bi-level > 40 dB to 5.5 MHz
  • HD tri-level > 35 dB to 30 MHz

Temperature range: 0 to 45° C (32° to 113° F) operating, -20 to +85° C (-4 to 185° F) storage. A temperature- and load- sensitive cooling fan is fitted

Humidity range: 10 to 85% (non condensing)

Case type: 3 RU rack mounting aluminum case


  • Width: 483 mm (19.0 in.) (445 mm 17.5 in.) behind rack location bracket
  • Depth: 490 mm (19.3 in.)
  • Height: 135 mm (5.3 in.)


  • Approximately 8.25 kg (18.2 lbs.) without modules
  • Approximately 15 kg (33.1 lbs.) fully populated

Please refer to the IQH3B and respective IQ module Operators Manuals to determine the module power rating limits (PR) for your required configuration. In the IQH3B Enclosure power is quoted in Load Units (LU), which refers to power (in Watts) taken from the positive rail. The IQH3B has 165 Power loading (LU) units available for modules. The Power Ratings of each module should be added together and the total should not exceed 165 loading units. Modules that do not specify a “Power Rating” should use the total power figure (W) as a power rating value.



Enclosure with Dual Redundant PSU and Ethernet/SNMP Compatible RollCall Gateway Card. 16 module slots

100 load unit quiet enclosure with Dual Redundant PSU and Ethernet/SNMP Compatible RollCall Gateway Card. 16 module slots

Single PSU as cold spare or upgrade to dual PSU configuration

Dual Fan unit for use as cold spare or replacement

Ethernet/SNMP compatible RollCall Gateway card for IQH4B and IQH3B enclosures

Notes: Although IQ modules are interchangeable between enclosures, each enclosure requires a suitable variant of panels: 

  • Either ‘A’ or ‘B’ order codes may be used when installing modules in IQH3B enclosures
  • ‘A’ build rear panels will fit into IQH3B enclosure, however features such as frame reference (if relevant to the module) would not be supported by those modules



IQ Modular Enclosures: Flexible and Reliable Video and Audio Backbone Datasheet

IQH3B enclosures offer industry-leading, high-density delivery of modular solutions. The 3 RU enclosure accepts up to 16 modules, and has dual redundant PSUs and cooling fans.



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